week04_05160495_周良峰

1.載windows.zip data.zip glut32.dll
   將glut32.dll和data放進windows資料夾
   啟動transformation




2.讓茶壺跟著滑鼠移動

code:

 #include <stdio.h>

     #include <GL/glut.h>

     float teapotX=0, teapotY=0;

     void display()

    {

    glClear(GL_COLOR_BUFFER_BIT  | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();//備份矩陣

    glTranslatef(teapotX, teapotY, 0); //依照茶壺的座標移動  

    glutSolidTeapot(0.3);

    glPopMatrix();//還原矩陣

    glutSwapBuffers(); //搭配GLUT_DOUBLE兩倍顯示

    }

    void motion(int x, int y) //mouse motion 事件

   {  

    teapotX = (x-150)/150.0; // 依照motion時的x來改teapot的座標

    teapotY = (150-y)/150.0;// 依照motion時的y來改teapot的座標

    glutPostRedisplay(); //重畫畫面

   }

   int main(int argc, char** argv)

  {

   glutInit(&argc,argv);

   glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

   glutCreateWindow("Week03 Mouse");

   glutDisplayFunc(display);

   //glutMouseFunc(mouse);

   glutMotionFunc(motion);

   glutMainLoop();//主要GLUT迴圈

  }